Learn where ticks live, how to prevent tick bites, and what to do after a tick bite. Homepage for CDC's website about ticks and tickborne diseases.

Jul 24, 2025 · Ticks can transmit diseases like Lyme disease, Rocky Mountain spotted fever, and Colorado tick fever, so prompt removal and medical attention are crucial. To remove a tick, …

Ticks are external parasites, living by feeding on the blood of mammals, birds, and sometimes reptiles and amphibians. The timing of the origin of ticks is uncertain, though the oldest known …

Nov 14, 2023 · As of 2019, Lyme disease is the most often diagnosed tick-borne illness. Here are images of unfed, human-biting ticks. The images also show where the ticks might be found in …

There are over 800 species of ticks throughout the world, but only two families of ticks, Ixodidae (hard ticks) and Argasidae (soft ticks), are known to transmit diseases or illness to humans.

Aug 9, 2025 · There are more than 800 kinds of ticks across the globe, but only two tick families can give you illnesses, also known as tick-borne diseases, if they bite you.

6 days ago · A tick is any of about 970 species of parasitic invertebrates in the order Ixodida. Ticks are important parasites of large wild and domestic animals and are also significant …

A list of types of ticks found in the United States that are known to bite and transmit disease to humans.

Jul 15, 2025 · Steps to take after a tick bite including removing a tick and watching for signs and symptoms.

WNV and EEE are usually transmitted to humans through the bite of an infected mosquito. No human or animal cases of WNV or EEE have been detected so far this year.